Income Taxes Net Operating Loss Carryforwards (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013
State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	$ 16,100
Expiring beginning in 2028 [Member] | Internal Revenue Service (IRS) [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	82,300
Federal Tax Credit Carryforward, Amount	4,200
Expiring between 2020 and 2027 [Member] | State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	9,000
Expiring between 2028 and 2033 [Member] | State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	$ 7,100